Image shared for Mawddach Trail: Penmaenpool to Arthog Estuary Return
Canal / Riverside Out & back

Mawddach Trail: Penmaenpool to Arthog Estuary Return

Gwynedd

Distance
9.1 mi
Est. time
4h 15m
Difficulty
Easy
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PaulWalkmates Route by PaulWalkmates

About this walk

Start at the National Park car park at Penmaenpool, beside the former railway and close to the old signal box. Follow the signed Mawddach Trail west, away from Dolgellau, with the estuary on your right. This out-and-back uses the old railway beside the salt marshes, passing the entrances to Abergwynant Woods before continuing to the Arthog trail access. Turn around at the Arthog car park junction and return along the same trail. There is no need to cross the Penmaenpool toll bridge or continue to Barmouth Bridge.

The route is largely level, with a wide compacted surface, gates and benches. Allow about four and a quarter hours for the full return and short stops. It is shared with cyclists, so keep space at gates and narrow sections. The estuary is tidal, but the walk stays on the established trail: keep off the mudflats and salt marsh. Bring a waterproof layer, as the open sections can be windy. Penmaenpool has toilets and places for refreshments; check opening times and the car park signs before setting off.

Route and access information: Eryri National Park Authority Mawddach Trail guide, checked October 2026.

Walk details

County
Gwynedd
Walk type
Out & back
Category
Canal / Riverside
Distance
9.1 mi (14.7 km)
Est. time
4h 15m
Explorer
Yes, off the beaten track

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